Microsoft is bringing Anthropic’s Claude Sonnet 4 and Claude Opus 4.1 AI models to its Microsoft 365 Copilot today. It’s a big move that expands model choice beyond just OpenAI’s range of models in Microsoft 365 Copilot, and it will allow Microsoft’s customers to access Anthropic models in Researcher and Microsoft Copilot Studio.“Copilot will continue to be powered by OpenAI’s latest models, and now our customers will have the flexibility to use Anthropic models too — starting in Researcher or w...